-18=4r+5r

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Solution for -18=4r+5r equation:


-18=4r+5r

We simplify the equation to the form, which is simple to understand 
-18=4r+5r

We move all terms containing r to the left and all other terms to the right. 
-4r-5r=+18

We simplify left and right side of the equation. 
-9r=+18

We divide both sides of the equation by -9 to get r. 
r=-2

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